Version 4.0 Time Navigator SnapBackup

Version 4.0
Ref: SNAP40BE-1205
Time Navigator SnapBackup

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Time Navigator SnapBackup

Contents
Contents i
Introduction
Functionalities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Time Navigator Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Time Navigator Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Time Navigator Getting Started Guide . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Other Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Time Navigator Online Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Time Navigator Tutorials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Web Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Generating the Environment Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Your Comments are Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Chapter 1 Snapshot Configuration
Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Supported Snapshot technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
NetApp SnapVault Technology Prerequisites . . . . . . . . . . . . . . . . . . . . . . .10
Configuring Time Navigator SnapBackup . . . . . . . . . . . . . . . . . . . . . . . .11
Access Permissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Chapter 2 Backup
Backup Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Backup Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Snapshot Administration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Chapter 3 Restore
Viewing Snapshot Instances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Restoring Snapshots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

ii Time Navigator SnapBackup
Chapter 4 Snapshot Step by Step

Introduction
Welcome to Time Navigator.
Time Navigator is a high-performance Backup, Archiving and Restore solution designed
to meet the most demanding data protection needs of enterprise customers with multiple
servers, large databases and advanced storage architectures.
Time Navigator SnapBackup integrates the latest snapshot technologies to allow users to
reduce the backup window while accomodating the ever increasing amount of data to store,
and aiming to provide continuous availability of data.
Functionalities
Time Navigator SnapBackup allows the user to schedule or manually trigger snapshots of
their data, and to restore data very easily and rapidly when the need arises. In addition,
Time Navigator SnapBackup offer users the possibility to create a tape backup of the
snapshots.
The Time Navigator applications that integrate a snapshot mechanism are:
■ Oracle
■ NDMP
■ List
■ Filesystem
About this guide
The present guide is structured as follows:
■ Chapter 1 presents the installation and configuration of Time Navigator
SnapBackup.
■ Chapter 2 explains how to perform snapshots of your data.
■ Chapter 3 describes how to restore data from a snapshot.
1

2 Time Navigator SnapBackup
Conventions
This guide uses conventions to make information easy to access and understand.
■ Text in Time Navigator graphical application windows is displayed in the following
font:
Window text.
■ Time Navigator commands and scripts related to the different operating systems
(Unix, Windows, etc.) are displayed in the following font:
scripts and commands.
■ Cross-references to further information are indicated by the ☞ symbol.
■ Procedures indicating the steps to follow to perform an action with Time Navigator
are presented as follows:
➤ Procedure title
1. First step.
2. Next step, etc.
■ Command syntax is presented as follows:
■ Square brackets [ ] indicate an option.
■ The - sign refers to a parameter. The parameter is either followed by the type
of information to provide, or is self-sufficient.
■ The | sign indicates a choice between several parameters.

Time Navigator Documentation
Time Navigator documentation consists of a series of PDF format files located on the
delivery CD-ROM.
The PDF format requires the use of Adobe Acrobat Reader, which can be downloaded from
the Adobe web site, at www.adobe.com.
Note The Time Navigator Release Notes and Time Navigator Getting Started
Guide manuals are also available in print format.
Time Navigator Release Notes
The Time Navigator Release Notes contain Time Navigator version-specific information
such as new features, new behaviors and performance improvements.
Time Navigator Getting Started Guide
Other Guides
The Time Navigator Getting Started Guide is an introductory guide to familiarize users
with Time Navigator. This guide contains information concerning Time Navigator Server
and Agent installation, backup configuration and restore methods.
The Reference guides (Time Navigator Installation Guide, Time Navigator
Administration Guide and Time Navigator Restore Guide) describe the installation,
administration and use of the software for backing up and restoring file systems.
The Specific guides describe installation, configuration and use of Time Navigator options,
such as Time Navigator Archiving Server, Time Navigator for Oracle, Time Navigator
for MS-SQL Server, Time Navigator for NDMP, etc.
3

4 Time Navigator SnapBackup
Time Navigator Online Help
All the Time Navigator graphical interfaces now include a new context-sensitive online
help system available for:
■ Windows (HtmlHelp format),
■ Unix (HTML format). This format is compatible with the Netscape Navigator 4.0
browser, or any other compatible browser.
This online help system allows you to find the information you need easily and quickly:
■ From any dialog box within the application, click on Help to access context-sensitive
information describing the parameters of the dialog box.
■ From any graphical interface, choose Help - Help Topics to get the online help for this
interface. You can also search for information through the Contents tab, the Index tab
or the Search tab that offers a powerful full-text search.
Time Navigator Tutorials
Discover Time Navigator through the Flash-based Tutorials delivered with the product:
■ Backup Tutorial: How to configure an automatic backup.
■ Restore Tutorial: How to restore missing files or previous versions of existing files.
■ Monitoring Tutorial: How to monitor your backups and analyze problems.
■ Architecture Tutorial: How Time Navigator can be integrated with various
architectures (Client/Server, Multi-site, Secured, Firewall and SAN Architectures).
■ Archiving Tutorial: How to use Time Navigator for long-term storage and
classification of your file sytems.
To access these tutorials, choose Help-Tutorial from the Time Navigator Administration
Console or Time Navigator Restore & Archive Manager. The tutorials are also available
from the Autorun (Windows) or from the CD-ROM index.htm file (Unix).
To view these tutorials, you need:
■ A web browser.
■ A Shockwave Player (or Macromedia Flash Player) program. If needed, download the
program corresponding to your machine’s operating system from:
http://www.macromedia.com/shockwave/download/alternates/

Note The Shockwave Player and Macromedia Flash Player programs are not
available for IBM AIX and VMS.
Technical Support
Web Support
If you have subscribed a maintenance contract and you encounter a problem with
Time Navigator, consult the Atempo Web Support at:
http://support.atempo.com
Complete information on Atempo Web Support, including how to get a login, the range of
tools and services available and how to use each of them, can be found in the
Troubleshooting Guide, on your Time Navigator delivery CD-ROM.
The Knowledge Base includes:
■ Time Navigator PDF documentation.
■ Time Navigator patches.
■ Time Navigator Known Issues.
■ Technical Notes.
If you are unable to solve your problem or find the information you need, Atempo and its
partners will help you. Web support includes an interactive interface through which you can
log your inquiries directly and follow them up. Support is also available by email and by
phone.
When calling the Atempo Technical Support team, please provide your maintenance
contract number. We also recommend that for all Support inquiries you generate the
Time Navigator Environment Report as summarized in the next section, and explained
exhaustively in the Troubleshooting Guide.
Generating the Environment Report
The report is generated by the Time Navigator Environment Reporter which retrieves the
information that is essential to address your problems as quickly as possible:
■ Time Navigator version installed.
■ Operating system related information.
■ Type of platforms and storage devices used.
■ Configuration and status of all your Time Navigator catalogs.
5

6 Time Navigator SnapBackup
■ Time Navigator Events and operating system logs.
To automatically generate the environment report, run the Time Navigator Environment
Reporter as follows:
■ On Unix systems, run the $TINA_HOME/tina_env_report.sh script.
■ On Windows systems, the user must be part of the Administrator group and choose
Start-Programs-Time Navigator-Utilities-Time Navigator Environment Reporter.
The retrieved information is gathered in a compressed file
tina_env_report_date_time.tar.gz.uu on Unix and
tina_env_report_date_time.zip on Windows. This file is located in the Adm
directory of Time Navigator installation directory. You must send it to
support@atempo.com.
A README file describing the operating mode is available at the following FTP address:
ftp://ftp.atempo.com/private/tina_env_report/README.txt
Note Updating the Time Navigator Environment Reporter
The Time Navigator Environment Reporter is subject to frequent updates.
Please regularly download the latest version from the following FTP address:
For Unix:
ftp://ftp.atempo.com/private/tina_env_report/tina_env_report.sh.Z
For Windows:
ftp://ftp.atempo.com/private/tina_env_report/tina_env_report.exe
Your Comments are Welcome
We value and appreciate your opinion as a Time Navigator user and reader of our
documentation. As we write, revise and evaluate our guides, your comments are the most
important input we receive. Please do not hesitate to send us any remarks you have to the
following address: documentation@atempo.com

C HAPTER 1
Snapshot Configuration
Architecture
This chapter describes the steps necessary to configure Time Navigator SnapBackup.
Time Navigator SnapBackup environment consists of:
■ A Time Navigator Server
1
■ A Time Navigator Agent configured with one of the following applications:
Oracle
List
Filesystem
NDMP
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8 Time Navigator SnapBackup
The agent must be of one of the following operating systems:
Windows 2003/2000/XP
Unix
■ In addition, depending on the selected technology, Time Navigator SnapBackup
can be used to snapshot Time Navigator volumes located on a NAS, for instance a
Network Appliance filer.
Prerequisites
■ Time Navigator SnapBackup does not require any specific installation. It is
included in the standard product, thus a working Time Navigator environment
including at least a Time Navigator server, a catalog complete with drive(s) and
cartridge pool(s), eventually some Time Navigator agents and a library, is required
on your network.
Warning For the NDMP application snapshot, you must imperatively have at least
one drive declared in the catalog, even if you do not perform tape backup
of your snapshots.
■ When you create the catalog, Time Navigator make sure that the license file you use
allows you to perform snapshot for the technology of your choice.
■ If you are using the Microsoft VSS technology, make sure that the service named
"Volume Shadow Copy" is started on the agent.
☞ For specific instructions to install Time Navigator in your environment, see the
Time Navigator Installation Guide. For configuration information, see the
Time Navigator Administration Guide. For licence file information see the Atempo
License Manager Guide.

Supported Snapshot technologies
Chapter 1 Snapshot Configuration 9
Time Navigator SnapBackup currently supports the following snapshot technologies:
■ Microsoft Volume Shadow Copy Services (VSS). This technology is embedded in
Windows 2003.
■ Network Appliance Snapshot (NetApp). The Network Appliance filer must be
compatible with version 4 of the NDMP protocol (for instance Ontap 6.4X or 6.5X).
■ Network Appliance SnapVault.
In addition, as summarized in the following table, the ability to use Time Navigator
SnapBackup varies with:
■ The operating system of the machine controlling the backup process. Currently, only
Windows 2003/XP/2000 or Unix are supported.
■ The Time Navigator application. You must use the Oracle, List, Filesystem or
NDMP applications to perform a backup with SnapBackup.
OS/ Application Oracle List Filesystem NDMP
Windows 2003 VSS
Network Appliance
VSS
Network Appliance
VSS Network Appliance
NetApp SnapVault
Windows 2000/XP Network Appliance Network Appliance Network Appliance
NetApp SnapVault
Unix Network Appliance Network Appliance Network Appliance
NetApp SnapVault

10 Time Navigator SnapBackup
Configuration
NetApp SnapVault Technology Prerequisites
If you are using NetApp SnapVault technology, you must have the appropriate primary and
secondary SnapVault licences, and you must configure your filers prior to configuring
Time Navigator SnapBackup.
The volume to snapshot (source ) is located on the primary filer. The data, once snapshotted
is copied on the secondary filer (destination). When a snapshot job is launched, the source
volume on the primary filer is snapshotted and a copy is sent to the destination volume on
the secondary filer.
The server configuration consists in:
■ Defining a qtree on the primary server.
■ Defining a manual schedule on both primary and secondary servers.
The schedule provide such information as the snapsetname, which must be the
same on both servers and the retention, i.e., the maximum number of snapshots kept
on the servers. The retention need not be the same on both servers.
Note Although you must set the retention when you define the manual schedule,
Time Navigator actually manages the retention using the
TINA_APP_MAX_SNAP variable. See “Variable Common to all
Applications”, page 14 for details.
■ Defining the relationship between the servers.
The relationship establishes the primary qtree and server and the secondary qtree and
server. The relationship definition must take place on the secondary server.
Note The qtree definition and the relationship definition have to be performed again
if the qtree is physically destroyed. See “SnapVault Restore”, page 27 for details.
For instance:
1. Define the qtree spr on vol1 on the primary server:
qtree create /vol/vol1/spr
2. Define a manual schedule on the primary server:
snapvault snap sched vol1 edith_sv 3@0@-

Chapter 1 Snapshot Configuration 11
The schedule is created for vol1. The snapsetname is edith_sv and the value of
the retention is 3.
3. Define a manual schedule on the secondary server:
snapvault snap sched vol1 edith_sv 5@0@-
The schedule is created for vol1. the snapsetname is edith_sv and the value of the
retention is 5.
4. Define the relationship between the servers on the secondary server:
snapvault start -S primary_servername:/vol/vol1/spr /vol/vol1/
spr
This command create the qtree spr on the secondary server. It contains an image of
the primary server qtree.
Note The qtree names need not be the same on the primary and secondary servers.
To reset the servers if you no longer want to perform snapshot, proceed as follows:
1. Stop the relationship on the secondary server :
snapvault stop /vol/vol1/spr
Warning This operation removes the qtree on the secondary server.
2. Release the relationship on the primary server:
snapvault release /vol/vol1/spr secondary_servername:/vol/
vol1/spr
3. Remove the manual schedule on both server:
snapvault snap unsched vol1 edith_sv
This command must be launch on both servers.
4. Remove the snapshots:
snap delete snapshot_name
This command must be launch on both servers.
Configuring Time Navigator SnapBackup
Configuring Time Navigator SnapBackup, consists in creating a Snapshot ready
application.

12 Time Navigator SnapBackup
Note Only the steps specific to snapshots are discussed here. For general configuration
information concerning the Oracle or NDMP applications, see their respective
guides. For information concerning the Filesystem or List application, see the
Time Navigator Administration Guide.
➤ To create a snapshot ready application
1. In Time Navigator Administration Console, select the host onto which you want to
perform snapshot and choose Platform-Create-Application.
2. Select an application that supports snapshots (see “Supported Snapshot
technologies”, page 9). The Create Application window appears.
3. Provide the requested information. In the Snapshot Type field, select a snapshot
technology and click on Configuration.
Note Only the snapshot technologies available for the Host operating system type
appear in the list. See “Supported Snapshot technologies”, page 9 for details.
The Snapshot Configuration window appears.

Chapter 1 Snapshot Configuration 13
4. The contents of this window vary with the technology selected. The following table
summarizes the configuration parameters according to the snapshot technology used:
Technology/
Parameter
VSS NetApp Snapshot NetApp SnapVault
Target Host Name Host accessing the volume to snapshot. By default, the host the application is
attached to
Note: If the host the application is attached to is a Windows platform, the
target host name cannot be modified once defined.
Target User Name Name and password of a user allowing connection to the targmet host. By
default, the user declared in the application window
Password
Filer Name N/A Name of the Filer
where the volume to
snapshot is located
Filer User Name N/A Name and password of N/A
Password N/A
a user allowing
N/A
connection to the filer.
Primary Filer Name N/A N/A Name of the Filer containing the data
to snapshot.
Note: For NDMP applications, must
be the same as the NDMP Server.
Primary Admin User N/A N/A Name and password of the Admin user
of the primary server.
Password
Secondary Filer Name N/A N/A Name of the Filer where the data is
snapshotted.
Secondary Admin User N/A N/A Name and password of the Admin user
of the secondary server.
Password
Temporary Directory N/A Name of a temporary directory where the root user or the
administrator is allowed to write.
Note: For NDMP applications this parameter is equivalent to
the TINA_TMP_DIR variable and need not be provided.
N/A

14 Time Navigator SnapBackup
Technology/
Parameter
Use SnapVault
AutoTrans Mode
5. Define environment variables as needed.
■ Variable Common to all Applications
VSS NetApp Snapshot NetApp SnapVault
N/A N/A Without this mode, each qtree
snapshot on the Primary Filer is
followed by a transfer and snapshot to
the Secondary Filer. With the
AutoTrans mode, all qtree snapshots
are performed on the Primary Filer,
then all the qtrees are transfered and
snapshotted on the Secondary Server
in a single operation.
Note: In AutoTrans mode, all the
qtrees from the Primary Filer are
copied onto the Secondary Filer.
Variable Name Description Possible
Values
[Default]
TINA_APP_MAX_SNAP Snapshot retention in number
of snapshots instances kept in
the catalog. If it is not defined,
all snapshot instances are kept
in the catalog. If a value is
specified, it becomes the
maximum number of snapshot
instances. When the maximum
number is reached,
Time Navigator removes the
oldest snapshot prior to
creating a new one.
Technology Status
Integer [0] All Optional
Warning Due to Microsoft constraints, Atempo is unable to guarantee a retention
greater than one per volume snapshotted with the VSS technology. Even
if a volume is snapshotted via several applications, only one instance is
guaranteed, whatever the value of TINA_APP_MAX_SNAP.

Chapter 1 Snapshot Configuration 15
■ Oracle Application
For the Oracle application, there are no environment variables specific to the
Snapshot functionality other than TINA_APP_MAX_SNAP (see “Variable Common to
all Applications”, page 14).
☞ See the Time Navigator for Oracle guide for a list of the variables available for the
Oracle application.
■ List Application
For the List application, there are no environment variables specific to the Snapshot
functionality other than TINA_APP_MAX_SNAP (see “Variable Common to all
Applications”, page 14).
☞ See the Time Navigator Administration Guide for a list of the variables available
for the List application.
■ Filesystem Application
In addition to TINA_APP_MAX_SNAP (see “Variable Common to all Applications”,
page 14), the following variable is required for the Filesystem application:
Variable Name Description Possible
Values
[Default]
TINA_FS_ROOT_DIR Specifies the access path of the
volume to be snapshotted,
which also indicates the
directory to be used as the root
of the Filesystem application.
The value of the variable must
be an existing directory.
Technology Status
Path VSS Mandatory
☞ See the Time Navigator Administration Guide for a list of the all the variables
available for the Filesystem application.
■ NDMP Application
For the NDMP application, there are no environment variables specific to the
Snapshot functionality other than TINA_APP_MAX_SNAP (see “Variable Common to
all Applications”, page 14).

16 Time Navigator SnapBackup
Note For the NDMP application, when the last snapshot created by a full backup is
removed due to retention constraint, the next snapshot backup is automatically
a full backup even if you have scheduled an incremental one. For instance, if
TINA_APP_MAX_SNAP is set to four and you have already performed one
full backup followed by three incremental ones, the next snapshot is going to
be a full backup regardless of the backup type that you actually scheduled.
☞ See the Time Navigator for NDMP guide for a list of all the variables available for
the NDMP application.
Warning For the NDMP application snapshot, you must imperatively have at least
one drive declared in the catalog, even if you do not perform tape backup
of your snapshots.
6. Click on OK to validate the information and close the window.
Access Permissions
In order to administer snapshots and most specifically, to be able to delete snapshots, you
must have been granted the Media-Remove Snapshot permission by the catalog privileged user.
☞ See the Time Navigator Administration Guide for details on how to grant permissions to
users.

C HAPTER 2
Backup
Time Navigator SnapBackup allows you to perform whole volume backup.
This chapter describes the steps you need to follow to perform volume backups with
Time Navigator SnapBackup.
When you perform a snapshot using Time Navigator SnapBackup, depending on the
application used, not all data is snapshotted. The following table summarizes what data is
snapshotted and what data is written on tape:
Application Data Snapshotted Data Written on Tape
Oracle Tablespaces Redo logs, Control files
List Contents of DIR keyword All other data and any level 1directory
marked with the NOSNAP keyword
Filesystem All data is snapshotted N/A
NDMP All data is snapshotted N/A
2
Snapshot Jobs
For Oracle and List applications, each time you perform a snapshot, two jobs are actually
launched. One job handles only the snapshotted data, the second job handles the data written
on tape. For Filesystem and NDMP applications, one job per snapshot is launched.
In addition, if you choose a multiple writing pool, another job handles the copy of the
snapshot to tape.
Backup of Alternate Data Stream with the SnapVault technology
For Windows platforms, the backup of Alternate data streams (ADS) with the SnapVault
technology is supported only if the filesystem of the volume hosting the secondary qtree is
of type NTFS.
17

18 Time Navigator SnapBackup
Backup Strategy
In order to perform snapshots, you must create a strategy with specific parameters that can
only be used to snapshot volumes (i.e., if you want to perform both snapshots and regular
backups of your application, you need to create two separate strategies).
Copying Snapshots to Tape
To perform a tape copy of your snapshot, make sure you have a cartridge pool available for
that purpose and declare it as a multiple writing pool in the backup strategy.
In addition, the multiple writing pool and its associated drives must be compatible with the
snapshot technology used. In particular, for Network Appliance or NetApp SnapVault
technologies, drives must be controlled by an NDMP Tape Server equipped with the
following version of the NDMP protocol:
■ NDMP Application: the Tape Server controlling the multiple writing drives must be
of the same NDMP version as the Data Server.
■ Oracle or List Application: the Tape Server controlling the multiple writing drives
must be in NDMP version 4.
➤ To create a snapshot strategy
1. In Time Navigator Administration Console, select a snapshot ready application.
2. Choose Backup-Strategy A (B, C or D)-Create. The Create Strategy window appears.
3. Click on the Snapshot tab.
4. Check the Enable Snapshot Backup Mode option.

Chapter 2 Backup 19
Note The complementary pool is only available for the Oracle and List applications.
It is mandatory for these two applications since some of the data cannot be
snapshotted.
5. The Remove Snapshot after Backup option if only available if you perform a tape copy
of your snapshot (see Step 7). When the option is selected, Time Navigator removes
the snapshot contents from disk once it has been backed up on tape.
6. Select the time schedule for your snapshot in the Incremental or Full tab.
7. If you want to perform a tape copy of your snapshot, select a Multiple Writing Pool in
both the Full and Incremental tabs. The tape copy takes place as soon as the snapshot is
complete. See “Copying Snapshots to Tape”, page 18 for additional information.
8. Click on OK to validate your choice.

20 Time Navigator SnapBackup
Backup Class
Depending on the technology and the Time Navigator application used, the rules for setting
the backup class vary:
Application Technology Rule for setting the backup class
Oracle All A snapshot can only contain the data of a single volume. If the backup
class you create contains several volumes, a snapshot is created for
each volume.
List All A backup class can be set on any directory in a volume. Even though
the entire volume containing the directory is snapshotted, only the
selected directory appears in Time Navigator Restore & Archive
Manager. If a level 1 directory within the volume must not be
snapshotted, use the nosnap keyword to exclude it from the
snapshot. See the Time Navigator Administration Guide for details
concerning the List application.
Filesystem All The path of the volume to snapshot must be provided via the
TINA_FS_ROOT_DIR environment variable (see “To create a
snapshot ready application”, page 12). You must set the backup class
at the root of the application.
NDMP All A backup class cannot be set at the root of the application. It must
only contain one volume. For instance, set a class on Vol/Vol1 and
another one on Vol/Vol2.
All SnapVault The class must be set at the Qtree level or below. For instance, if the
Qtree is defined as /vol/vol1/spr, the class must be
/vol/vol1/spr or any subdirectory.

Snapshot Administration
Chapter 2 Backup 21
Time Navigator allows you to list all the snapshots created in the catalog for a given backup
folder, and to delete snapshots.
➤ To administer snapshots
1. In Time Navigator Administration Console, choose Media-Snapshot.
2. Select the application backup folder for which you want to view snapshots. The
Snapshot Administration window appears.
3. To modify the application backup folder for which snapshots are displayed, click on
Folder Choice.
4. To delete a snapshot, select it in the list and click on:
■ Full Delete to remove it from disk and from the catalog.
■ Delete from Catalog to remove it only from the catalog.
Depending on the application you are using, the snapshot process may actually create
several snapshots for a single job. In that case, all the snapshots created by the same
job are deleted when you choose to delete one of them.

22 Time Navigator SnapBackup
Note When you delete snapshots created with the Network Appliance technology,
Time Navigator is able to delete several snapshots simultaneously. By default,
up to 10 snapshot are deleted in parallel. You can modify this value via the
"Number of NDMP Snapshots Deleted Simultaneously" tunable
(max_ndmp_snap_parallel_delete). See the Time Navigator Tunables
guide for details concerning tunable use.
5. To view additional information about the selected snapshot, click on Information. The
following information is provided:
■ Name: Name of the snapshot, consists in the name of the application and the
number of the job that created the snapshot.
■ Type: Indicates the technology used to create the snapshot
■ Strategy: Letter of the snapshot strategy.
■ Status: Snapshot status, i.e., "Valid" if the snapshot is reachable or "Invalid" if
it is not.
■ Original Volume Name: Physical name of the volume to snapshot
■ Object Path: Physical name of the snapshot
■ Relative Path in Volume: Path of the snapshotted data relative to the volume into
which they are located
■ Mounted Volume Path: Mount point of the snapshotted volume
■ Snapshot Path: Mount point of the snapshot data.
■ Mount Point Relative Path: Path of the snapshot data relative to the volume mount
point
■ Application Data Path: Path of the snapshot data within the application. In most
cases this field is equivalent to the backup class.
6. To modify the information displayed, click on Column Choice.

7. Click on Close when you are done.
Chapter 2 Backup 23

24 Time Navigator SnapBackup

C HAPTER 3
Restore
The snapshot restore procedure is identical to that of any file or directory. See the
Time Navigator Restore Guide for instructions and information concerning restore
operations.
Only the details specific to Snapshot restore are discussed in this chapter.
Viewing Snapshot Instances
In Time Navigator Restore & Archive Manager, snapshotted objects appear in the same
manner as any backed up object.
When you right click on a snapshotted object and select Instances, the Media column
indicates the name of the snapshot for each instance.
Useful Information Concerning Symbolic Links:
3
If the volume you are snapshotting via a Windows machine (for instance a Network
Appliance filer volume) contains some symbolic links, be aware that:
25

26 Time Navigator SnapBackup
■ These links appear as regular files in Time Navigator Restore & Archive Manager.
Moreover the graphical display does not distinguish file links from directory links.
However, they will be correctly restored as symbolic links.
■ If you have both a snapshot and a tape instance of a symbolic link and if you activate
the depth of field, each instance appears as a separate object. As a result, one of the
instance appears as a missing file.
In this example, the snapshot instance appears as a file, and the tape instance
appears as a missing file, it is striped.
The rc1.d.SAV link has actually been deleted, both instance are striped. You can
use either instance to restore that link.

Restoring Snapshots
The procedure to restore a snapshot is identical to that of restoring a file.
☞ See the Time Navigator Restore Guide for details.
Chapter 3 Restore 27
Permission Issue for the NDMP application
The user launching a snapshot restore with the NDMP application must have the necessary
permissions to create directories on the filer. The root user for instance in an NFS
environment does not have any permission on the filer.
SnapVault Restore
In order to restore a SnapVault snapshot, the relationship between the primary and
secondary servers must exists. If not, define it prior to restoring data.
In addition, if you are restoring a lost qtree, you must redefine the relationship after the
restore is complete to make sure that the relationship points to the correct qtree. This
additional step is required for the next backup to work correctly.
➤ To restore a lost qtree
■ Redefine the qtree on the primary filer
■ Restore the qtree contents with Time Navigator.
■ Redefine the relationship between this qtree and the qtree on the secondary server.
The relationship definition must take place on the secondary server.
☞ See “NetApp SnapVault Technology Prerequisites”, page 10 for SnapVault configuration
details.
Restore Volume Calculation
For performances reasons, for NDMP and Filesystem applications the restore volume is not
systematically calculated at the beginning of the restore. You will be asked via a message
box whether or not you want the calculation to be performed.
Alternatively, you can set the tunable "Force the Calculation of the Restore Volume" to yes
and the volume will be calculated for all restore operations.
☞ See the Time Navigator Tunables guide for details.

28 Time Navigator SnapBackup
Cross Restore
Cross restoring from a snapshot is not currently supported by Time Navigator.

C HAPTER 4
Snapshot Step by Step
This chapter presents a step by step procedure to perform a Microsoft VSS snapshot on a
Filesystem application.
This procedure is provided as an exemple of using Time Navigator SnapBackup.
☞ The details of each step can be found in the Configuration and Backup chapters of the present
guide.
➤ To perform snapshots with a Filesystem application using Microsoft VSS technology
1. Verify in the Windows Administrative Tools Services window that the Volume Shadow
Copy service is started. If not, start it.
2. In Time Navigator Administration Console, select the host onto which you want to
perform snapshot and choose Platform-Create-Application-Filesystem. Provide the
information needed.
3. In the Snapshot Type Field, select VSS and click on Configuration. The following
window appears.
Enter the Target User Name and Password for the host and click on OK.
4
29

30 Time Navigator SnapBackup
4. In the Create Application window, click on Add in the Environement Variables area. Define
TINA_FS_ROOT_DIR to specify the access path of the volume you want to
snapshot, for instance c:\user\spr\data. Click on OK to create the application.
5. In Time Navigator Administration Console, select the icon of the newly created
Filesystem application and choose Backup-Class-Create. Enter / to create a class at the
root of the application.
6. In Time Navigator Administration Console, select the icon of the newly created
Filesystem application and choose Backup-Strategy A-Create... Click on the Snapshot tab
and check the Enable Snapshot Backup Mode option. Schedule snapshots in the
incremental or full tabs.
7. Wait for a scheduled snapshot to occur, or right click on the Filesystem Application
Strategy A and select Full Session Now.
8. In Time Navigator Administration Console, choose Monitoring-Job Manager... to
verify that the snapshot job is successful.